When a VIP is configured for L4 LB only, we can use LVS to improve
performance. To achieve that, we should enable acceleration on the Edge
appliance.
Depends-On: I7f3b95b43f87b35d641f0c7535d648ee178eda41
Change-Id: I027cb1e4b5cd82006a80e17f3fd2b0feca1278a4